This is in response from a query in the macro section.
There are so many types of macro setups for the beginner to choose, so since I have a few of them, I might as well share some of the test shots I have for them for those considering macro to make up their minds.
Here is what I have, but I left out the extension tube : DOh! :
Shot on a Kx and straight from RAW and converted in Picasa, no PP, so not the best image quality conversion, though that is not the point here anyway since they are for comparison within themselves.
#1 Standard issue 100mm macro lens at f8
Min. Focus distance is about 30cm
#2 100mm macro + HOYA+4 Closeup filter
A hood had to be added to prevent quite a bit of loss in contrast
Min. Focus distance is around 20cm
#3 100mm macro + 1.7x teleconverter
Min. Focus distance is around 45cm
#4 135mm + Reversed 50/2
Min. Focus distance is ~15cm
Edited : (Added extension tube 25mm)
#5 100mm + 25mm section of extension tube
Min. Focus distance is ~25cm
#4 gives the largest magnification, even though its on a longer 135mm focal length lens.
The teleconverter option (#3) is the simplest to use, since the setup functions like a 170mm macro lens, that focuses to infinity.
#5 is simpler to carry around and easier to attach than a close up filter since there is no worry over dirty optics and placement into a 'proper' filter case. Less degradation to optical performance as well imo. Of course, longer tubes will give more magnification.